Centralized fiber cabling therefore needs no power, grounding or AC in telecom rooms, nor in fact, even a telecom room itself, and thereby offers considerable potential for cost savings if properly designed. The answer is a definitive yes, but understanding the nuances of where and how electricity is used is key to appreciating its efficiency. Other Internet Technologies: Electricity Consumption Fiber optic internet, often lauded as the pinnacle of broadband technology, leverages light pulses. But when there's a power outage, the availability of fiber-based services can be affected for several reasons. But you need to keep it working with a backup power source.